How does this PE textured DTY yarn achieve the effect of touch cooling?

PE textured DTY yarn, its core material is polyethylene. As a widely used thermoplastic, polyethylene is favored for its good processing performance, chemical stability and thermal conductivity. In the production process of PE textured DTY yarn, through specific spinning and stretching processes, combined with chemical modification or physical modification means, it can be given a specific texture and cross-sectional shape, which are essential for achieving the touch cooling effect.
Heat conduction is the process of heat transfer from a high-temperature object to a low-temperature object. Due to its material properties, PE textured DTY yarn has a relatively high thermal conductivity, which means that it can transfer heat more effectively. When human skin comes into contact with PE textured DTY yarn, since the human body temperature is usually higher than the ambient temperature, heat will be transferred from the human skin through the contact surface to the PE textured DTY yarn. This heat transfer process causes the temperature of the human skin surface to drop, resulting in a cool touch.
The surface of PE textured DTY yarn is specially treated to form a unique texture structure. This texture not only increases the aesthetics of the yarn, but more importantly, it significantly increases the surface area of ​​the yarn. The increase in surface area means that more heat can be transferred from the human body to the PE texture DTY wire by thermal conduction and thermal radiation. In addition, the texture structure may also form tiny air channels, which helps to accelerate the dissipation of heat by thermal convection.
Thermal radiation is the process of heat transfer from a high-temperature object to a low-temperature object in the form of electromagnetic waves. The special texture and structure of the PE texture DTY wire make its surface rougher, thereby increasing the area and efficiency of thermal radiation. When the PE texture DTY wire absorbs the heat of the human body, it will dissipate part of the heat to the surrounding environment in the form of thermal radiation. This heat dissipation process helps to further reduce the temperature of the PE texture DTY wire, thereby enhancing the touch cooling effect.
In some cases, such as environments with fast air flow, the PE texture DTY wire can also accelerate the dissipation of heat by thermal convection. Thermal convection is the process by which heat is transferred through the flow of a fluid (such as air). When air flows, it takes away the heat from the surface of the PE texture DTY wire, thereby reducing its temperature. This cooling effect is particularly evident in summer or high temperature environments, when air flow is usually more frequent and intense.
The touch cooling effect of PE textured DTY yarn is the result of the combined effect of multiple cooling mechanisms. The three cooling methods of heat conduction, heat radiation and heat convection cooperate with each other, so that PE textured DTY yarn can quickly absorb and take away heat when it touches the human body. This efficient heat transfer and dissipation process causes the temperature of the human skin surface to drop rapidly, thus producing a cool touch experience.